CN110654409B

CN110654409B - Bogie and tramcar with same

Info

Publication number: CN110654409B
Application number: CN201911029801.XA
Authority: CN
Inventors: 陈晨; 毕海涛; 黄鹏; 刘威; 向俊龙
Original assignee: China Railway Hi Tech Industry Corp Ltd; China Railway Rail Transit Equipment Co Ltd
Current assignee: China Railway Hi Tech Industry Corp Ltd; China Railway Rail Transit Equipment Co Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2021-01-26
Anticipated expiration: 2039-10-28
Also published as: CN110654409A

Abstract

The invention provides a bogie and a tramcar with the same, wherein the bogie comprises: the framework comprises a longitudinal beam and two cross beams arranged in parallel, and the front end and the rear end of the longitudinal beam are respectively and fixedly connected to the two cross beams; the two walking wheels are respectively pivoted and symmetrically arranged on the left side and the right side of the longitudinal beam and are positioned between the two cross beams; the driving device is fixedly arranged on the framework, is connected with the two walking wheels and is used for driving the walking wheels to rotate; wherein the front-back direction and the left-right direction are directions perpendicular to each other in a horizontal plane. It will be appreciated that the running wheels are provided without further components on one side, thus leaving operating space for maintenance and/or replacement of the running wheels.

Description

Bogie and tramcar with same

Technical Field

The invention relates to the technical field of rail transportation, in particular to a bogie and a tramcar with the same.

Background

A conventional public transportation vehicle is a tramcar, which is generally formed by connecting a plurality of cars with each other, and a bogie is generally arranged at the bottom of the cars, in the prior art, the structure of the bogie is generally as shown in fig. 1, an installation part in a shape of a Chinese character 'kou' is arranged on a framework 1, and a running wheel 2 is arranged in the installation part, it can be understood that, in the normal use of the tramcar, the running wheel 2 may need to be repaired and/or replaced, and in the existing bogie, the running wheel 2 is surrounded by the framework 1 at the periphery, so the repair and/or replacement is inconvenient.

Therefore, it is an urgent problem to design a bogie that facilitates maintenance and/or replacement of the running wheels 2.

Disclosure of Invention

The invention aims to provide a bogie and a tramcar with the same.

In order to achieve one of the above objects, according to one embodiment of the present invention, there is provided a bogie for a railroad car, including: the framework comprises a longitudinal beam and two cross beams arranged in parallel, and the front end and the rear end of the longitudinal beam are respectively and fixedly connected to the two cross beams; the two walking wheels are respectively pivoted and symmetrically arranged on the left side and the right side of the longitudinal beam and are positioned between the two cross beams; and the driving device is fixedly arranged on the framework, is connected with the two walking wheels and is used for driving the walking wheels to rotate.

As a further improvement of an embodiment of the present invention, an upper surface of the side member is provided with a first concave portion; a central pin plate is arranged above the longitudinal beam, a composite spring is arranged in the first concave part, and a connecting part is fixedly connected between the central pin plate and the composite spring; the left side and the right side of the opening of the first concave part are both provided with stopping parts, one part of each stopping part is positioned above the opening of the first concave part, the left side and the right side of each connecting part are both provided with flexible parts, the flexible parts on the left side correspond to the stopping parts on the left side, and the flexible parts on the right side correspond to the stopping parts on the right side.

As a further improvement of an embodiment of the present invention, the driving device includes a motor and a gear box; the longitudinal beam is provided with mounting holes penetrating through the left side surface and the right side surface of the longitudinal beam, and the first concave part is positioned above the mounting holes; the gear boxes are arranged in the mounting holes, rotating shafts are symmetrically arranged on the left side and the right side of each gear box, and each rotating shaft is connected to one walking wheel; the central pin plate is positioned right above the rotating shaft; the motor is arranged on the cross beam.

In a further improvement of an embodiment of the present invention, a brake disk is provided between the running wheels and the rotating shaft, and a brake drum that engages with the brake disk is provided on the gear case.

As a further improvement of an embodiment of the present invention, the upper surfaces of the left and right ends of the two cross beams are provided with elastic supporting members.

As a further improvement of one embodiment of the invention, vertical shock absorbers are arranged on the upper surfaces of the left end and the right end of the two cross beams.

As a further improvement of an embodiment of the present invention, current receiving devices are provided on the lower surfaces of both the left and right ends of one beam.

As a further improvement of an embodiment of the present invention, the lower surfaces of both the two beams are provided with guide wheels.

The embodiment also provides the tramcar which is provided with the bogie.

Compared with the prior art, the invention has the technical effects that: the invention provides a bogie and a tramcar with the same, wherein one side of a running wheel is not provided with other parts, so that an operation space is left, and the running wheel is convenient to maintain and/or replace.

Drawings

FIG. 1 is a schematic view of a prior art truck configuration;

fig. 2A and 2B are schematic structural views of the bogie in the present embodiment;

FIG. 3A is an exploded view of a portion of the components in the truck;

FIG. 3B is an enlarged view of area A in FIG. 2A;

fig. 3C is a schematic structural diagram of the stopper portion in the present embodiment;

FIG. 3D is an exploded view of a portion of the components in the truck;

fig. 4 is an exploded structure diagram of the rail in the present embodiment.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

Terms such as "upper," "above," "lower," "below," and the like, used herein to denote relative spatial positions, are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

An embodiment of the present invention provides a bogie for a tram, as shown in fig. 2A and 2B, including:

the framework 1 comprises a longitudinal beam 12 and two cross beams 11 arranged in parallel, wherein the front end and the rear end of the longitudinal beam 12 are respectively fixedly connected to the two cross beams 11; the two walking wheels 2 are respectively and pivotally and symmetrically arranged on the left side and the right side of the longitudinal beam 12 and are positioned between the two cross beams 11; the driving device 3 is fixedly arranged on the framework 1, is connected with the two walking wheels 2 and is used for driving the walking wheels 2 to rotate; wherein the front-back direction and the left-right direction are directions perpendicular to each other in a horizontal plane.

Here, in an actual railroad car in which a bogie is installed at the bottom of a car body, for example, a frame 1 is connected to a floor of the car body, the front-rear direction being a direction of movement of the car body, and in which two running wheels 2 are installed at left and right sides of a side member 12, respectively, it is understood that no other components are provided at the left side of the left running wheel 2, and thus, an operation space is left, thereby facilitating maintenance and/or replacement of the left running wheel 2; the right-hand running wheels 2 on the right-hand side are not provided with further components, so that an operating space remains for maintenance and/or replacement of the right-hand running wheels 2.

Here, the two running wheels 2 are located on the left and right sides of the side member 12, so that the track width between the two running wheels 2 is increased, thereby enabling the anti-roll performance of the bogie to be improved. Optionally, the track width is 850mm-2500 mm.

In the present embodiment, as shown in fig. 3A and 3B, the upper surface of the longitudinal beam 12 is provided with a first concave portion 122;

a center pin plate 15 is arranged above the longitudinal beam 12, a compound spring 151 is arranged in the first concave part 122, and a connecting part 152 is fixedly connected between the center pin plate 15 and the compound spring 151; here, in an actual railroad car, the center pin plate 15 is used to connect the bottom of the car. The composite spring 151 may be a spring formed by wrapping a layer of rubber material around a metal coil spring and performing composite vulcanization, and it can be understood that the composite spring 151 can buffer up-and-down shaking of a carriage, and can also play a certain role in buffering front-and-back and left-and-right shaking.

The left side and the right side of the opening of the first concave portion 122 are both provided with a stopping portion 124, a part of the stopping portion 124 is located above the opening of the first concave portion 122, the left side and the right side of the connecting portion 152 are both provided with a flexible portion, the left flexible portion corresponds to the position of the left stopping portion 124, and the right flexible portion corresponds to the position of the right stopping portion 124. Here, as shown in fig. 3A, during the operation of the tramcar, the tramcar may shake left and right, and the shaking amplitude may be too large, for example, when the tramcar shakes right, because a part of the right-side stopping portion 124 is located above the opening of the first concave portion 122, and the right-side flexible portion corresponds to the position of the right-side stopping portion 124, it can be understood that the right-side flexible portion of the connecting portion 152 will collide with the right-side stopping portion 124, and will not collide with the longitudinal beam 12, so that the shaking amplitude to right can be prevented, and the longitudinal beam 12 can also be prevented from being damaged; when the left sway occurs, since a part of the stopping portion 124 on the left side is located above the opening of the first recess 122, and the flexible portion on the left side corresponds to the position of the stopping portion 124 on the left side, it can be understood that the flexible portion on the left side of the connecting portion 152 will collide with the stopping portion 124 on the left side, and will not collide with the longitudinal beam 12, so that the amplitude of the left sway can be prevented, and the longitudinal beam 12 can also be prevented from being damaged.

In the present embodiment, as shown in fig. 3A, the driving device 3 includes a motor 31 and a gear box 32; the longitudinal beam 12 is provided with mounting holes 123 penetrating through the left side surface and the right side surface of the longitudinal beam 12, and the first concave part 122 is positioned above the mounting holes 123; the gear box 32 is arranged in the mounting hole 123, rotating shafts 321 are symmetrically arranged on the left side and the right side of the gear box 32, and each rotating shaft 321 is connected to one traveling wheel 2; the center pin plate 15 is located right above the rotating shaft 321; the motor 31 is disposed on the cross member 11. Here, during operation of the tram, the motor 31 rotates and drives the gearbox 32 to operate, which gearbox 32 converts this rotation into a driving force that drives the running wheels 2 to rotate. Here, the turning shafts 321 are symmetrically provided on both the left and right sides of the gear box 32, that is, the two turning shafts 321 are coaxial, and since the center pin plate 15 is located directly above the turning shafts 321, the possibility of the bogie tilting forward or backward can be greatly reduced.

Here, as shown in fig. 3A, three through holes are provided above the mounting hole 123 of the side member 12 in the left-right direction, and the three through holes penetrate both the left and right side surfaces of the side member 12, and one opening is provided in the upper surface of the side member 12, and the opening penetrates the through hole located in the middle, thereby forming the first recess 122.

Here, as shown in fig. 3C, the stopper portion 124 includes a horizontal plate 1242 and a vertical plate 1241, one side of the horizontal plate 1242 is fixedly connected to the bottom of the vertical plate 1241, and in order to improve the connection strength, two reinforcing plates 1243 are provided between the horizontal plate 1242 and the vertical plate 1241, one part of the horizontal plate 1242 is connected to the upper surface of the side member 2, the other part is located above the first recess 122, and the vertical plate 1241 faces the flexible portion of the connecting portion 152.

In the present embodiment, a brake disc 33 is provided between the running wheels 2 and the rotating shaft 321, and a brake drum 34 that fits the brake disc is provided on the gear case. Here, the brake disc 33 can perform a braking operation on the vehicle compartment in cooperation with the brake drum 34.

In this embodiment, the upper surfaces of the left and right ends of the two beams 11 are provided with elastic supporting members 111. Here, the elastic support 111 may be a hollow spring or a rubber spring.

In this embodiment, vertical dampers 112 are disposed on the upper surfaces of the left and right ends of the two cross beams 11.

In this embodiment, current receiving devices 113 are provided on the lower surfaces of both the left and right ends of one beam 11.

In this embodiment, guide wheels 114 are provided on the lower surfaces of both the cross beams 11.

Here, as shown in fig. 3D, the cross beam 11 is composed of an upper beam 115 and a lower beam 116, the upper beam 115 is bent at a middle position thereof to form a second recess with a downward opening, the lower beam 116 is bent to form a third recess with an upward opening, and the second recess and the third recess together constitute a mounting space of the motor 31. A plurality of mounting holes 1151 are provided in the middle of the upper beam 115 so that the motor 31 is mounted to the upper beam 115 through the mounting holes 1151.

The second embodiment provides a tram, which is provided with the bogie described in the first embodiment.

In the tramcar, four elastic supporting pieces 111, four vertical shock absorbers 112 and a central pin plate 15 can be connected with the same carriage chassis to drive the carriage to move; the two elastic supporting pieces 111 at the front end can be connected with one carriage, the two elastic supporting pieces 111 at the rear end can be connected with the other carriage, and the central pin plate 15 is connected with the hinged seat or the through passage, so that the two carriages share one single-shaft bogie, and the light weight of the vehicle is realized.

In the third embodiment, a track 4 is provided, and fig. 4 shows a schematic structural diagram of the track 4, where the track includes: the track comprises a first track beam 41, a second track beam 42 and a connecting beam 43, wherein the first track beam, the second track beam and the connecting beam 43 extend along the front-back direction, the first track beam and the second track beam are parallel and fixed on the left side and the right side of the connecting beam 43 in a separated mode, and the upper side faces of the first track beam and the second track beam respectively provide walking faces for two walking wheels 2. The first rail beam 41, the second rail beam 42 and the connecting beam 43 together define an inner trough 44, the left and right sides of which are guide surfaces for guiding wheels 114, it being understood that the guide wheels 114 cooperate with the guide surfaces during operation of the tram to provide a steering force for the tram.

The power supply rails 45 are arranged on the left side of the first track beam 41 and on the right side of the second track beam 42, the power supply rail 45 on the left side is matched with the current receiving device 113 on the left side of the bogie, and the power supply rail 45 on the right side is matched with the current receiving device 113 on the right side of the bogie, so that power is supplied for the operation of the tramcar and power is supplied for the operation of the driving device 3.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A bogie for a tram, comprising:

the framework (1) comprises a longitudinal beam (12) and two cross beams (11) arranged in parallel, wherein the front end and the rear end of the longitudinal beam (12) are respectively and fixedly connected to the two cross beams (11); the two walking wheels (2) are respectively and pivotally and symmetrically arranged on the left side and the right side of the longitudinal beam (12) and are positioned between the two cross beams (11); the driving device (3) is fixedly arranged on the framework (1), is connected with the two walking wheels (2) and is used for driving the walking wheels (2) to rotate;

a first concave part (122) is arranged on the upper surface of the longitudinal beam (12), and a center pin plate (15) is arranged above the longitudinal beam (12);

the driving device (3) comprises a motor (31) and a gear box (32);

the longitudinal beam (12) is provided with mounting holes (123) penetrating through the left side surface and the right side surface of the longitudinal beam (12), and the first concave part (122) is positioned above the mounting holes (123);

the gear box (32) is arranged in the mounting hole (123), rotating shafts (321) are symmetrically arranged on the left side and the right side of the gear box (32), and each rotating shaft (321) is connected to one walking wheel (2); the central pin plate (15) is positioned right above the rotating shaft (321);

the motor (31) is arranged on the cross beam (11);

the cross beam (11) consists of an upper beam (115) and a lower beam (116), a second concave part with a downward opening is formed by bending the middle position of the upper beam (115), a third concave part with an upward opening is formed by bending the lower beam (116), the second concave part and the third concave part jointly form an installation space of the motor (31), a plurality of installation holes (1151) are formed in the middle of the upper beam (115), and the motor (31) is installed on the upper beam (115) through the installation holes (1151);

the dimensions of the second recess and the third recess in the left-right direction are both larger than the dimensions of the motor (31) in the left-right direction.

2. The bogie of claim 1, wherein:

a compound spring (151) is arranged in the first concave part (122), and a connecting part (152) is fixedly connected between the central pin plate (15) and the compound spring (151);

the left side and the right side of the opening of the first concave part (122) are respectively provided with a stopping part (124), one part of the stopping part (124) is positioned above the opening of the first concave part (122), the left side and the right side of the connecting part (152) are respectively provided with a flexible part, the flexible part on the left side corresponds to the stopping part (124) on the left side, and the flexible part on the right side corresponds to the stopping part (124) on the right side.

3. The bogie of claim 1, wherein:

a brake disc (33) is arranged between the running wheels (2) and the rotating shaft (321), and a brake drum (34) matched with the brake disc is arranged on the gear box.

4. The bogie of claim 1, wherein:

the upper surfaces of the left end and the right end of the two cross beams (11) are provided with elastic supporting pieces (111).

5. The bogie of claim 1, wherein:

vertical shock absorbers (112) are arranged on the upper surfaces of the left end and the right end of the two cross beams (11).

6. The bogie of claim 1, wherein:

the lower surfaces of the left end and the right end of one beam (11) are provided with current receiving devices (113).

7. The bogie of claim 1, wherein:

the lower surfaces of the two cross beams (11) are provided with guide wheels (114).

8. A tramcar, its characterized in that: a bogie as claimed in any one of claims 1 to 7 is installed.